Portion of a shoe outsole



FIG. 1 is a first perspective view of a portion of a shoe outsole showing my new design;

FIG. 2 is a plan view thereof; and,

FIG. 3 a second perspective view thereof.

The broken line showing of the remainder of the shoe is for illustrative puroses only and forms no part of the claimed design. The broken line that defines the bounds of the claimed design forms no part thereof. 

The ornamental design for a portion of a shoe outsole, as shown and described. 